If, as suggested by another poster, there is an earlier rule permitting icmp access, try "inserting" the rule instead of "appending it. So instead of: iptables -A INPUT -p icmp ... say: iptables -I INPUT -p icmp ... Because the first rule to match applies, your blocking rule needs to appear before something that lets icmp through. -- Cameron Simpson <cs@xxxxxxxxxx> DoD#743 http://www.cskk.ezoshosting.com/cs/ Always code as if the guy who ends up maintaining your code will be a violent psychopath who knows where you live. - Martin Golding, DoD #0236, martin@xxxxxxxxxxxxxxxx -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list